There are more bacteria in a single human mouth than there are people on Earth. elaborate
Immune cells have memory; this allows for faster and stronger responses to previously encountered pathogens. elaborate
Your brain produces enough electricity to power a small lightbulb. elaborate
Cryobiology involves techniques to cool biological materials down to extremely low temperatures, sometimes even below -196°C (the boiling point of liquid nitrogen), preserving them for later use. elaborate
Your metabolism slows down as you sleep. elaborate
Some insects, like certain species of stick insects, can reproduce asexually through parthenogenesis, meaning females can produce offspring without fertilization from a male. elaborate